<!--公共头部-->
<nav class="navbar navbar-default navbar-fixed-top">
    <!-- We use the fluid option here to avoid overriding the fixed width of a normal container within the narrow content columns. -->
    <div class="container-fluid">
        <div class="navbar-header">
            <a class="navbar-brand" href="#">图片在线管理</a>
        </div>

        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-6">
            <ul class="nav navbar-nav">
            <li class="active"><a href="list.php">图片列表</a></li>
            <li><a href="upload.php">图片上传</a></li>
            </ul>
        </div><!-- /.navbar-collapse -->
    </div>
</nav>